0
\$\begingroup\$

I created a test bench for bond wire in ADS EM simulator and got the following graph in the picture I attached. I'm trying to compare the values which I got in ADS with theoretical one. But I'm confused how to do calculation of S-parameters in a two port network.

Kindly help me to calculate the S parameters and compare with the practical one. enter image description here

\$\endgroup\$
  • \$\begingroup\$ something like this? The first hit when I googled 'calculate s-parameters of series impedance'. \$\endgroup\$ – Neil_UK Dec 22 '15 at 13:22
2
\$\begingroup\$

The long answer is set up the problem like this:

schematic

simulate this circuit – Schematic created using CircuitLab

Now calculate the forward and reverse-travelling waves at each of the ports. This gives you \$S_{11}\$ and \$S_{21}\$.

Then hook up the generator on the other side of the device and calculate the forward and reverse travelling waves again to get \$S_{12}\$ and \$S_{22}\$.

But since you are already using ADS, there is an easier way: Hook up your device model between S parameter ports and simulate it. This will also make it easier to make ADS draw a graph comparing the simple model with the more complex model.

If your "theoretical" model is a simple combination of R, L, and C elements, you could even use the ADS optimizer to tune the theoretical model to match the phenomenological model (or vice versa), or to match some measurement data.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.